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(11)

EP 2 868 054 A1

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(43) Date of publication: 06.05.2015 Bulletin 2015/19 (21) Application number: 13734873.6 (22) Date of filing: 07.06.2013

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) H04L 29/12(2006.01) (86) International application number: PCT/US2013/044638 (87) International publication number: WO 2014/004040 (03.01.2014 Gazette 2014/01)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 29.06.2012 US 201261666057 P 29.06.2012 US 201261666059 P 08.01.2013 US 201313736159 (71) Applicant: Cisco Technology, Inc. San Jose, CA 95134-1706 (US)	(72) Inventors: WEGGER, Jan N-1352 Kolsas (NO) SANDBAKKEN, Geir N-0682 Oslo (NO) HAKONSEN, Greg N-3534 Sokna (NO) PATEL, Rahul Nashua, NH 03062 (US) (74) Representative: Kazi, Ilya et al Mathys & Squire LLP The Shard 32 London Bridge Street London SE1 9SG The Shard 32 London Bridge Street London SE1 9SG (GB)